<template>
  <div>
    <!-- 定义面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 定义卡片 -->
    <el-card class="box-card">

      <!-- 定义第一行数据 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryItemInfo.query" clearable @clear="getItemList">
            <el-button slot="append" icon="el-icon-search" @click="getItemList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="toAddItem">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- 获取商品列表数据 -->
      <el-table :data="itemList" style="width: 100%" stripe border>
        <el-table-column type="index" label="序号" width="50px">
        </el-table-column>
        <el-table-column prop="name" label="商品标题" width="200px">
        </el-table-column>
        <el-table-column prop="fileName" label="商品图片" width="200px">
          <template slot-scope="scope">
            <el-image :src="'http://localhost:8011/images/'+scope.row.fileName" style="height: 100px;width: 100px"/>
          </template>
        </el-table-column>
        <el-table-column prop="description" label="卖点信息" width="300px">
        </el-table-column>
        <!-- 使用过滤器修改时间 在main.js中定义过滤器 -->
        <el-table-column prop="price" label="价格(元)" width="80px">
          <template slot-scope="scope">
            {{ scope.row.price | priceFormat }}
          </template>
        </el-table-column>
        <el-table-column prop="stock" label="数量" width="80px">
        </el-table-column>
        <!--        <el-table-column prop="status" label="状态" width="80px">-->
        <!--          <template slot-scope="scope">-->
        <!--            <el-switch v-model="scope.row.status" active-color="#13ce66" inactive-color="#ff4949"-->
        <!--              @change="updateStatus(scope.row)"></el-switch>-->
        <!--          </template>-->
        <!--        </el-table-column>-->
        <!-- <el-table-column prop="updated" label="更新时间" width="180px" :formatter="formatDate">
         </el-table-column> -->
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="updateItemBtn(scope.row)">修改</el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="deleteItemBtn(scope.row)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 定义分页插件-->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange"
                     :current-page="queryItemInfo.pageNum" :page-sizes="[1, 5, 10, 20]"
                     :page-size="queryItemInfo.pageSize"
                     layout="total, sizes, prev, pager, next, jumper" :total="total">
      </el-pagination>

    </el-card>
    <!-- 5. 定义修改商品的对话框 -->
    <el-dialog title="编辑商品" :visible.sync="updateDialogVisible"
               @close="closeUpdateDialog" width="65%">
      <el-form :model="updateProductForm"
               label-width="100px" class="demo-ruleForm">
        <el-form-item label="商品名" prop="name">
          <el-input v-model="updateProductForm.name"></el-input>
        </el-form-item>
        <el-form-item label="商品介绍" prop="description">
          <el-input v-model="updateProductForm.description"></el-input>
        </el-form-item>
        <el-form-item label="价格" prop="price">
          <el-input v-model="updateProductForm.price"></el-input>
        </el-form-item>
        <el-form-item label="库存" prop="stock">
          <el-input v-model="updateProductForm.stock"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
          <el-button @click="updateDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="updateProductBtn">确 定</el-button>
        </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 1.定义商品列表信息
      itemList: [],
      // 2.定义分页对象
      queryItemInfo: {
        query: '', // 定义查询参数
        pageNum: 1,
        pageSize: 10
      },
      total: 0,
      updateDialogVisible: false,
      updateProductForm: { // 设置 修改的对象
        id: '',
        name: '',
        description: '',
        price: 0,
        stock: 0
      }
    }
  },
  created() {
    // 1.获取商品列表数据
    this.getItemList()
  },
  methods: {
    // 实现商品信息分页查询
    async getItemList() {
      const {
        data: result
      } = await this.$http.get('/item/getItemList', {
        params: this.queryItemInfo
      })
      if (result.status !== 200) return this.$message.error('商品列表查询失败')
      this.itemList = result.data.rows
      this.total = result.data.total
    },
    //修改商品信息
    async updateProductBtn() {
      const {data: result} = await this.$http.put('/product/updateProduct', this.updateProductForm)
      if (result.status !== 200) return this.$message.error('修改商品信息失败')
      this.$message.success('更新状态成功')
      this.updateDialogVisible = false
      this.getItemList()
    },
    closeUpdateDialog() {
    },
    // 通过JS格式化时间
    // formatDate (row, column, cellValue, index) {
    //   const date = new Date(cellValue)
    //   const year = date.getFullYear()
    //   const month = (date.getMonth() + 1 + '').padStart(2, '0')
    //   const day = (date.getDate() + '').padStart(2, '0')
    //   const HH = (date.getHours() + '').padStart(2, '0')
    //   const MM = (date.getMinutes() + '').padStart(2, '0')
    //   const SS = (date.getSeconds() + '').padStart(2, '0')
    //   return year + '-' + month + '-' + day + ' ' + HH + ':' + MM + ':' + SS
    // },
    // 条数变化时 调用
    handleSizeChange(size) {
      this.queryItemInfo.pageSize = size
      this.getItemList()
    },
    // 页码值变化时 调用
    handleCurrentChange(current) {
      this.queryItemInfo.pageNum = current
      this.getItemList()
    },
    // async updateStatus (item) {
    //   const {
    //     data: result
    //   } = await this.$http.put('/item/updateItemStatus', item.id)
    //   if (result.status !== 200) return this.$message.error('更新状态失败')
    //   this.$message.success('更新状态成功')
    // },
    async deleteItemBtn(item) {
      // 消息确认框
      this.$confirm('此操作将永久删除该商品, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async () => {
        // 根据id删除数据
        const {
          data: result
        } = await this.$http.delete('/product/deleteItemById', {
          params: {
            id: item.id
          }
        })
        if (result.status !== 200) return this.$message.error('商品删除失败')
        this.$message.success('商品删除成功')
        // 重新获取商品列表信息
        this.getItemList()
      }).catch(() => {
        this.$message({
          type: 'info',
          message: '已取消删除'
        })
      })
    },
    // 转向到商品新增页面
    toAddItem() {
      this.$router.push('/item/addItem')
    },
    async updateItemBtn(product) {
      // console.log('扩展案例,自己实现 只需要修改 标题/卖点/价格/数量')
      this.updateDialogVisible = true
      // 动态获取想要的数据
      // 方式1：根据id发起ajax请求，获取最新的数据
      const {data: result} = await this.$http.get('/product/' + product.id)
      if (result.status !== 200) return this.$message.error('查询商品失败')
      this.updateProductForm.name = result.data.name;
      this.updateProductForm.description = result.data.description;
      this.updateProductForm.price = result.data.price;
      this.updateProductForm.stock = result.data.stock;
      this.updateProductForm.id = result.data.id;
      console.log(this.updateProductForm)
      // 方式2：从页面中获取数据（不推荐，数据不是最新的！）
      // this.updateUserForm = user;
    }
  }
}
</script>
<!-- 防止组件样式冲突 -->
<style lang="less" scoped>

</style>
